Operation Manual

D Transceiver power
PROBLEM POSSIBLE CAUSE SOLUTION REF.
Power does not come on
when the [POWER] switch is
pushed.
• Power cable is improperly connected.
• Fuse is blown.
• Re-connect the DC power cable correctly.
• Check for the cause, then replace the fuse
with the spare one.
( Fuses are installed in the DC power cable
and the internal PA unit.)
p. 20
p. 149
D Transmit and receive
PROBLEM POSSIBLE CAUSE SOLUTION REF.
No sounds from the speaker. • Volume level is too low.
• The squelch is closed.
• The transceiver is in transmit.
• Rotate the [AF] control clockwise to obtain a
suitable listening level.
• Rotate the [RF/SQL] control to 11 o’clock
position to open the squelch.
• Push [TRANSMIT] to receive or check the
SEND line of an external unit, if connected.
p. 34
p. 33
p. 36
Sensitivity is too low, and only
strong signals are audible.
• The antenna is not connected properly.
• The antenna for another band is selected.
• The antenna is not properly tuned.
• The attenuator is activated.
• Re-connect to the antenna connector.
• Select an antenna suitable for the operating
frequency.
•
Push and hold [TUNER] for 1 sec. to manually
tune the antenna.
• Push [ATT] (MF4) several times to select
“ATT OFF.”
—
p. 112
p. 113
p. 72
Received audio is unclear or
distorted.
• Wrong operating mode is selected.
• PBT function is activated.
• Noise blanker is turned ON when receiving a
strong signal.
• Preamp is activated.
• The noise reduction is activated and the [NR]
control
is too far clockwise.
• Select a suitable operating mode.
• Push and hold [PBT-CLR] for 1 sec. to reset
the function.
• Push [NB] to turn the noise blanker OFF.
• Push [P.AMP] (MF3) once or twice to turn the
function OFF.
• Set the [NR] control for maximum readability.
p. 32
p. 75
p. 81
p. 72
p. 82
The [ANT] switch does not
function
• The antenna switch has not been activated. • Set the antenna switch in set mode to “Auto”
or “Manual.”
p. 130
Transm
itting is impossible. • The operating frequency is not inside a ham
band.
•
Set the frequency to be in a ham band. p. 28
Output power is too low. • The [RF POWER]
control is set too far coun-
terclockwise
• The drive gain level is set too high.
• The [MIC GAIN] control is set too far counter-
clockwise
• The antenna for another band is selected.
• The antenna is not properly tuned.
• Rotate the [RF POWER] control clockwise.
• Set the drive gain level to a suitable level.
• Set the [MIC GAIN] control to a suitable posi-
tion.
• Select an antenna suitable for the operating
frequency.
• Push and hold [TUNER] for 1 sec. to manually
tune the antenna.
p. 36
p. 37
p. 36
p. 112
p. 113
No contact can be made with
another station.
• RIT or ∂TX funct
ion is activated.
• Split frequency function and/or dualwatch are/
is activated.
• Push [RIT] or [∂TX] to turn the function OFF.
• Push [SPLIT] and/or [DUALWATCH] to turn
the function OFF.
pgs. 73,
87
pgs. 79,
88
Transmit signal is unclear or
distorted.
• The [MIC GAIN]
control is set too far clock-
wise.
• The speech compressor function is activated.
• Set the [MIC GAIN] control to a suitable posi-
tion.
• Push [COMP] (MF7) to turn the function OFF.
p. 37
p. 86
Repeater cannot be accessed. • Split frequency function is not activated.
• Programmed subaudible tone frequency is
wrong.
• Push [SPLIT] to to turn the function ON
• Reset the frequency using set mode.
p. 88
p. 28
■ Troubleshooting
The following chart is designed to help you correct
problems which are not equipment malfunctions.
If you are unable to locate the cause of a problem
or
solve it through the use of this chart, contact your
nearest Icom Dealer or Service Center.
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MAINTENANCE
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